12421220203 has 8 divisors (see below), whose sum is σ = 14208629472. Its totient is φ = 10637048256.

The previous prime is 12421220179. The next prime is 12421220233. The reversal of 12421220203 is 30202212421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12421220203 - 2⁵ = 12421220171 is a prime.

It is a super-2 number, since 2×12421220203² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12421220233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 801100 + ... + 816457.

It is an arithmetic number, because the mean of its divisors is an integer number (1776078684).

Almost surely, 2^12421220203 is an apocalyptic number.

12421220203 is a deficient number, since it is larger than the sum of its proper divisors (1787409269).

12421220203 is a wasteful number, since it uses less digits than its factorization.

12421220203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618661.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 12421220203 its reverse (30202212421), we get a palindrome (42623432624).

The spelling of 12421220203 in words is "twelve billion, four hundred twenty-one million, two hundred twenty thousand, two hundred three".